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      1 /*
      2  * This file define a set of standard wireless extensions
      3  *
      4  * Version :	22	16.3.07
      5  *
      6  * Authors :	Jean Tourrilhes - HPL - <jt (at) hpl.hp.com>
      7  * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
      8  */
      9 
     10 #ifndef _UAPI_LINUX_WIRELESS_H
     11 #define _UAPI_LINUX_WIRELESS_H
     12 
     13 /************************** DOCUMENTATION **************************/
     14 /*
     15  * Initial APIs (1996 -> onward) :
     16  * -----------------------------
     17  * Basically, the wireless extensions are for now a set of standard ioctl
     18  * call + /proc/net/wireless
     19  *
     20  * The entry /proc/net/wireless give statistics and information on the
     21  * driver.
     22  * This is better than having each driver having its entry because
     23  * its centralised and we may remove the driver module safely.
     24  *
     25  * Ioctl are used to configure the driver and issue commands.  This is
     26  * better than command line options of insmod because we may want to
     27  * change dynamically (while the driver is running) some parameters.
     28  *
     29  * The ioctl mechanimsm are copied from standard devices ioctl.
     30  * We have the list of command plus a structure descibing the
     31  * data exchanged...
     32  * Note that to add these ioctl, I was obliged to modify :
     33  *	# net/core/dev.c (two place + add include)
     34  *	# net/ipv4/af_inet.c (one place + add include)
     35  *
     36  * /proc/net/wireless is a copy of /proc/net/dev.
     37  * We have a structure for data passed from the driver to /proc/net/wireless
     38  * Too add this, I've modified :
     39  *	# net/core/dev.c (two other places)
     40  *	# include/linux/netdevice.h (one place)
     41  *	# include/linux/proc_fs.h (one place)
     42  *
     43  * New driver API (2002 -> onward) :
     44  * -------------------------------
     45  * This file is only concerned with the user space API and common definitions.
     46  * The new driver API is defined and documented in :
     47  *	# include/net/iw_handler.h
     48  *
     49  * Note as well that /proc/net/wireless implementation has now moved in :
     50  *	# net/core/wireless.c
     51  *
     52  * Wireless Events (2002 -> onward) :
     53  * --------------------------------
     54  * Events are defined at the end of this file, and implemented in :
     55  *	# net/core/wireless.c
     56  *
     57  * Other comments :
     58  * --------------
     59  * Do not add here things that are redundant with other mechanisms
     60  * (drivers init, ifconfig, /proc/net/dev, ...) and with are not
     61  * wireless specific.
     62  *
     63  * These wireless extensions are not magic : each driver has to provide
     64  * support for them...
     65  *
     66  * IMPORTANT NOTE : As everything in the kernel, this is very much a
     67  * work in progress. Contact me if you have ideas of improvements...
     68  */
     69 
     70 /***************************** INCLUDES *****************************/
     71 
     72 #include <linux/types.h>		/* for __u* and __s* typedefs */
     73 #include <linux/socket.h>		/* for "struct sockaddr" et al	*/
     74 #include <linux/if.h>			/* for IFNAMSIZ and co... */
     75 
     76 /***************************** VERSION *****************************/
     77 /*
     78  * This constant is used to know the availability of the wireless
     79  * extensions and to know which version of wireless extensions it is
     80  * (there is some stuff that will be added in the future...)
     81  * I just plan to increment with each new version.
     82  */
     83 #define WIRELESS_EXT	22
     84 
     85 /*
     86  * Changes :
     87  *
     88  * V2 to V3
     89  * --------
     90  *	Alan Cox start some incompatibles changes. I've integrated a bit more.
     91  *	- Encryption renamed to Encode to avoid US regulation problems
     92  *	- Frequency changed from float to struct to avoid problems on old 386
     93  *
     94  * V3 to V4
     95  * --------
     96  *	- Add sensitivity
     97  *
     98  * V4 to V5
     99  * --------
    100  *	- Missing encoding definitions in range
    101  *	- Access points stuff
    102  *
    103  * V5 to V6
    104  * --------
    105  *	- 802.11 support (ESSID ioctls)
    106  *
    107  * V6 to V7
    108  * --------
    109  *	- define IW_ESSID_MAX_SIZE and IW_MAX_AP
    110  *
    111  * V7 to V8
    112  * --------
    113  *	- Changed my e-mail address
    114  *	- More 802.11 support (nickname, rate, rts, frag)
    115  *	- List index in frequencies
    116  *
    117  * V8 to V9
    118  * --------
    119  *	- Support for 'mode of operation' (ad-hoc, managed...)
    120  *	- Support for unicast and multicast power saving
    121  *	- Change encoding to support larger tokens (>64 bits)
    122  *	- Updated iw_params (disable, flags) and use it for NWID
    123  *	- Extracted iw_point from iwreq for clarity
    124  *
    125  * V9 to V10
    126  * ---------
    127  *	- Add PM capability to range structure
    128  *	- Add PM modifier : MAX/MIN/RELATIVE
    129  *	- Add encoding option : IW_ENCODE_NOKEY
    130  *	- Add TxPower ioctls (work like TxRate)
    131  *
    132  * V10 to V11
    133  * ----------
    134  *	- Add WE version in range (help backward/forward compatibility)
    135  *	- Add retry ioctls (work like PM)
    136  *
    137  * V11 to V12
    138  * ----------
    139  *	- Add SIOCSIWSTATS to get /proc/net/wireless programatically
    140  *	- Add DEV PRIVATE IOCTL to avoid collisions in SIOCDEVPRIVATE space
    141  *	- Add new statistics (frag, retry, beacon)
    142  *	- Add average quality (for user space calibration)
    143  *
    144  * V12 to V13
    145  * ----------
    146  *	- Document creation of new driver API.
    147  *	- Extract union iwreq_data from struct iwreq (for new driver API).
    148  *	- Rename SIOCSIWNAME as SIOCSIWCOMMIT
    149  *
    150  * V13 to V14
    151  * ----------
    152  *	- Wireless Events support : define struct iw_event
    153  *	- Define additional specific event numbers
    154  *	- Add "addr" and "param" fields in union iwreq_data
    155  *	- AP scanning stuff (SIOCSIWSCAN and friends)
    156  *
    157  * V14 to V15
    158  * ----------
    159  *	- Add IW_PRIV_TYPE_ADDR for struct sockaddr private arg
    160  *	- Make struct iw_freq signed (both m & e), add explicit padding
    161  *	- Add IWEVCUSTOM for driver specific event/scanning token
    162  *	- Add IW_MAX_GET_SPY for driver returning a lot of addresses
    163  *	- Add IW_TXPOW_RANGE for range of Tx Powers
    164  *	- Add IWEVREGISTERED & IWEVEXPIRED events for Access Points
    165  *	- Add IW_MODE_MONITOR for passive monitor
    166  *
    167  * V15 to V16
    168  * ----------
    169  *	- Increase the number of bitrates in iw_range to 32 (for 802.11g)
    170  *	- Increase the number of frequencies in iw_range to 32 (for 802.11b+a)
    171  *	- Reshuffle struct iw_range for increases, add filler
    172  *	- Increase IW_MAX_AP to 64 for driver returning a lot of addresses
    173  *	- Remove IW_MAX_GET_SPY because conflict with enhanced spy support
    174  *	- Add SIOCSIWTHRSPY/SIOCGIWTHRSPY and "struct iw_thrspy"
    175  *	- Add IW_ENCODE_TEMP and iw_range->encoding_login_index
    176  *
    177  * V16 to V17
    178  * ----------
    179  *	- Add flags to frequency -> auto/fixed
    180  *	- Document (struct iw_quality *)->updated, add new flags (INVALID)
    181  *	- Wireless Event capability in struct iw_range
    182  *	- Add support for relative TxPower (yick !)
    183  *
    184  * V17 to V18 (From Jouni Malinen <j (at) w1.fi>)
    185  * ----------
    186  *	- Add support for WPA/WPA2
    187  *	- Add extended encoding configuration (SIOCSIWENCODEEXT and
    188  *	  SIOCGIWENCODEEXT)
    189  *	- Add SIOCSIWGENIE/SIOCGIWGENIE
    190  *	- Add SIOCSIWMLME
    191  *	- Add SIOCSIWPMKSA
    192  *	- Add struct iw_range bit field for supported encoding capabilities
    193  *	- Add optional scan request parameters for SIOCSIWSCAN
    194  *	- Add SIOCSIWAUTH/SIOCGIWAUTH for setting authentication and WPA
    195  *	  related parameters (extensible up to 4096 parameter values)
    196  *	- Add wireless events: IWEVGENIE, IWEVMICHAELMICFAILURE,
    197  *	  IWEVASSOCREQIE, IWEVASSOCRESPIE, IWEVPMKIDCAND
    198  *
    199  * V18 to V19
    200  * ----------
    201  *	- Remove (struct iw_point *)->pointer from events and streams
    202  *	- Remove header includes to help user space
    203  *	- Increase IW_ENCODING_TOKEN_MAX from 32 to 64
    204  *	- Add IW_QUAL_ALL_UPDATED and IW_QUAL_ALL_INVALID macros
    205  *	- Add explicit flag to tell stats are in dBm : IW_QUAL_DBM
    206  *	- Add IW_IOCTL_IDX() and IW_EVENT_IDX() macros
    207  *
    208  * V19 to V20
    209  * ----------
    210  *	- RtNetlink requests support (SET/GET)
    211  *
    212  * V20 to V21
    213  * ----------
    214  *	- Remove (struct net_device *)->get_wireless_stats()
    215  *	- Change length in ESSID and NICK to strlen() instead of strlen()+1
    216  *	- Add IW_RETRY_SHORT/IW_RETRY_LONG retry modifiers
    217  *	- Power/Retry relative values no longer * 100000
    218  *	- Add explicit flag to tell stats are in 802.11k RCPI : IW_QUAL_RCPI
    219  *
    220  * V21 to V22
    221  * ----------
    222  *	- Prevent leaking of kernel space in stream on 64 bits.
    223  */
    224 
    225 /**************************** CONSTANTS ****************************/
    226 
    227 /* -------------------------- IOCTL LIST -------------------------- */
    228 
    229 /* Wireless Identification */
    230 #define SIOCSIWCOMMIT	0x8B00		/* Commit pending changes to driver */
    231 #define SIOCGIWNAME	0x8B01		/* get name == wireless protocol */
    232 /* SIOCGIWNAME is used to verify the presence of Wireless Extensions.
    233  * Common values : "IEEE 802.11-DS", "IEEE 802.11-FH", "IEEE 802.11b"...
    234  * Don't put the name of your driver there, it's useless. */
    235 
    236 /* Basic operations */
    237 #define SIOCSIWNWID	0x8B02		/* set network id (pre-802.11) */
    238 #define SIOCGIWNWID	0x8B03		/* get network id (the cell) */
    239 #define SIOCSIWFREQ	0x8B04		/* set channel/frequency (Hz) */
    240 #define SIOCGIWFREQ	0x8B05		/* get channel/frequency (Hz) */
    241 #define SIOCSIWMODE	0x8B06		/* set operation mode */
    242 #define SIOCGIWMODE	0x8B07		/* get operation mode */
    243 #define SIOCSIWSENS	0x8B08		/* set sensitivity (dBm) */
    244 #define SIOCGIWSENS	0x8B09		/* get sensitivity (dBm) */
    245 
    246 /* Informative stuff */
    247 #define SIOCSIWRANGE	0x8B0A		/* Unused */
    248 #define SIOCGIWRANGE	0x8B0B		/* Get range of parameters */
    249 #define SIOCSIWPRIV	0x8B0C		/* Unused */
    250 #define SIOCGIWPRIV	0x8B0D		/* get private ioctl interface info */
    251 #define SIOCSIWSTATS	0x8B0E		/* Unused */
    252 #define SIOCGIWSTATS	0x8B0F		/* Get /proc/net/wireless stats */
    253 /* SIOCGIWSTATS is strictly used between user space and the kernel, and
    254  * is never passed to the driver (i.e. the driver will never see it). */
    255 
    256 /* Spy support (statistics per MAC address - used for Mobile IP support) */
    257 #define SIOCSIWSPY	0x8B10		/* set spy addresses */
    258 #define SIOCGIWSPY	0x8B11		/* get spy info (quality of link) */
    259 #define SIOCSIWTHRSPY	0x8B12		/* set spy threshold (spy event) */
    260 #define SIOCGIWTHRSPY	0x8B13		/* get spy threshold */
    261 
    262 /* Access Point manipulation */
    263 #define SIOCSIWAP	0x8B14		/* set access point MAC addresses */
    264 #define SIOCGIWAP	0x8B15		/* get access point MAC addresses */
    265 #define SIOCGIWAPLIST	0x8B17		/* Deprecated in favor of scanning */
    266 #define SIOCSIWSCAN	0x8B18		/* trigger scanning (list cells) */
    267 #define SIOCGIWSCAN	0x8B19		/* get scanning results */
    268 
    269 /* 802.11 specific support */
    270 #define SIOCSIWESSID	0x8B1A		/* set ESSID (network name) */
    271 #define SIOCGIWESSID	0x8B1B		/* get ESSID */
    272 #define SIOCSIWNICKN	0x8B1C		/* set node name/nickname */
    273 #define SIOCGIWNICKN	0x8B1D		/* get node name/nickname */
    274 /* As the ESSID and NICKN are strings up to 32 bytes long, it doesn't fit
    275  * within the 'iwreq' structure, so we need to use the 'data' member to
    276  * point to a string in user space, like it is done for RANGE... */
    277 
    278 /* Other parameters useful in 802.11 and some other devices */
    279 #define SIOCSIWRATE	0x8B20		/* set default bit rate (bps) */
    280 #define SIOCGIWRATE	0x8B21		/* get default bit rate (bps) */
    281 #define SIOCSIWRTS	0x8B22		/* set RTS/CTS threshold (bytes) */
    282 #define SIOCGIWRTS	0x8B23		/* get RTS/CTS threshold (bytes) */
    283 #define SIOCSIWFRAG	0x8B24		/* set fragmentation thr (bytes) */
    284 #define SIOCGIWFRAG	0x8B25		/* get fragmentation thr (bytes) */
    285 #define SIOCSIWTXPOW	0x8B26		/* set transmit power (dBm) */
    286 #define SIOCGIWTXPOW	0x8B27		/* get transmit power (dBm) */
    287 #define SIOCSIWRETRY	0x8B28		/* set retry limits and lifetime */
    288 #define SIOCGIWRETRY	0x8B29		/* get retry limits and lifetime */
    289 
    290 /* Encoding stuff (scrambling, hardware security, WEP...) */
    291 #define SIOCSIWENCODE	0x8B2A		/* set encoding token & mode */
    292 #define SIOCGIWENCODE	0x8B2B		/* get encoding token & mode */
    293 /* Power saving stuff (power management, unicast and multicast) */
    294 #define SIOCSIWPOWER	0x8B2C		/* set Power Management settings */
    295 #define SIOCGIWPOWER	0x8B2D		/* get Power Management settings */
    296 
    297 /* WPA : Generic IEEE 802.11 informatiom element (e.g., for WPA/RSN/WMM).
    298  * This ioctl uses struct iw_point and data buffer that includes IE id and len
    299  * fields. More than one IE may be included in the request. Setting the generic
    300  * IE to empty buffer (len=0) removes the generic IE from the driver. Drivers
    301  * are allowed to generate their own WPA/RSN IEs, but in these cases, drivers
    302  * are required to report the used IE as a wireless event, e.g., when
    303  * associating with an AP. */
    304 #define SIOCSIWGENIE	0x8B30		/* set generic IE */
    305 #define SIOCGIWGENIE	0x8B31		/* get generic IE */
    306 
    307 /* WPA : IEEE 802.11 MLME requests */
    308 #define SIOCSIWMLME	0x8B16		/* request MLME operation; uses
    309 					 * struct iw_mlme */
    310 /* WPA : Authentication mode parameters */
    311 #define SIOCSIWAUTH	0x8B32		/* set authentication mode params */
    312 #define SIOCGIWAUTH	0x8B33		/* get authentication mode params */
    313 
    314 /* WPA : Extended version of encoding configuration */
    315 #define SIOCSIWENCODEEXT 0x8B34		/* set encoding token & mode */
    316 #define SIOCGIWENCODEEXT 0x8B35		/* get encoding token & mode */
    317 
    318 /* WPA2 : PMKSA cache management */
    319 #define SIOCSIWPMKSA	0x8B36		/* PMKSA cache operation */
    320 
    321 /* -------------------- DEV PRIVATE IOCTL LIST -------------------- */
    322 
    323 /* These 32 ioctl are wireless device private, for 16 commands.
    324  * Each driver is free to use them for whatever purpose it chooses,
    325  * however the driver *must* export the description of those ioctls
    326  * with SIOCGIWPRIV and *must* use arguments as defined below.
    327  * If you don't follow those rules, DaveM is going to hate you (reason :
    328  * it make mixed 32/64bit operation impossible).
    329  */
    330 #define SIOCIWFIRSTPRIV	0x8BE0
    331 #define SIOCIWLASTPRIV	0x8BFF
    332 /* Previously, we were using SIOCDEVPRIVATE, but we now have our
    333  * separate range because of collisions with other tools such as
    334  * 'mii-tool'.
    335  * We now have 32 commands, so a bit more space ;-).
    336  * Also, all 'even' commands are only usable by root and don't return the
    337  * content of ifr/iwr to user (but you are not obliged to use the set/get
    338  * convention, just use every other two command). More details in iwpriv.c.
    339  * And I repeat : you are not forced to use them with iwpriv, but you
    340  * must be compliant with it.
    341  */
    342 
    343 /* ------------------------- IOCTL STUFF ------------------------- */
    344 
    345 /* The first and the last (range) */
    346 #define SIOCIWFIRST	0x8B00
    347 #define SIOCIWLAST	SIOCIWLASTPRIV		/* 0x8BFF */
    348 #define IW_IOCTL_IDX(cmd)	((cmd) - SIOCIWFIRST)
    349 #define IW_HANDLER(id, func)			\
    350 	[IW_IOCTL_IDX(id)] = func
    351 
    352 /* Odd : get (world access), even : set (root access) */
    353 #define IW_IS_SET(cmd)	(!((cmd) & 0x1))
    354 #define IW_IS_GET(cmd)	((cmd) & 0x1)
    355 
    356 /* ----------------------- WIRELESS EVENTS ----------------------- */
    357 /* Those are *NOT* ioctls, do not issue request on them !!! */
    358 /* Most events use the same identifier as ioctl requests */
    359 
    360 #define IWEVTXDROP	0x8C00		/* Packet dropped to excessive retry */
    361 #define IWEVQUAL	0x8C01		/* Quality part of statistics (scan) */
    362 #define IWEVCUSTOM	0x8C02		/* Driver specific ascii string */
    363 #define IWEVREGISTERED	0x8C03		/* Discovered a new node (AP mode) */
    364 #define IWEVEXPIRED	0x8C04		/* Expired a node (AP mode) */
    365 #define IWEVGENIE	0x8C05		/* Generic IE (WPA, RSN, WMM, ..)
    366 					 * (scan results); This includes id and
    367 					 * length fields. One IWEVGENIE may
    368 					 * contain more than one IE. Scan
    369 					 * results may contain one or more
    370 					 * IWEVGENIE events. */
    371 #define IWEVMICHAELMICFAILURE 0x8C06	/* Michael MIC failure
    372 					 * (struct iw_michaelmicfailure)
    373 					 */
    374 #define IWEVASSOCREQIE	0x8C07		/* IEs used in (Re)Association Request.
    375 					 * The data includes id and length
    376 					 * fields and may contain more than one
    377 					 * IE. This event is required in
    378 					 * Managed mode if the driver
    379 					 * generates its own WPA/RSN IE. This
    380 					 * should be sent just before
    381 					 * IWEVREGISTERED event for the
    382 					 * association. */
    383 #define IWEVASSOCRESPIE	0x8C08		/* IEs used in (Re)Association
    384 					 * Response. The data includes id and
    385 					 * length fields and may contain more
    386 					 * than one IE. This may be sent
    387 					 * between IWEVASSOCREQIE and
    388 					 * IWEVREGISTERED events for the
    389 					 * association. */
    390 #define IWEVPMKIDCAND	0x8C09		/* PMKID candidate for RSN
    391 					 * pre-authentication
    392 					 * (struct iw_pmkid_cand) */
    393 
    394 #define IWEVFIRST	0x8C00
    395 #define IW_EVENT_IDX(cmd)	((cmd) - IWEVFIRST)
    396 
    397 /* ------------------------- PRIVATE INFO ------------------------- */
    398 /*
    399  * The following is used with SIOCGIWPRIV. It allow a driver to define
    400  * the interface (name, type of data) for its private ioctl.
    401  * Privates ioctl are SIOCIWFIRSTPRIV -> SIOCIWLASTPRIV
    402  */
    403 
    404 #define IW_PRIV_TYPE_MASK	0x7000	/* Type of arguments */
    405 #define IW_PRIV_TYPE_NONE	0x0000
    406 #define IW_PRIV_TYPE_BYTE	0x1000	/* Char as number */
    407 #define IW_PRIV_TYPE_CHAR	0x2000	/* Char as character */
    408 #define IW_PRIV_TYPE_INT	0x4000	/* 32 bits int */
    409 #define IW_PRIV_TYPE_FLOAT	0x5000	/* struct iw_freq */
    410 #define IW_PRIV_TYPE_ADDR	0x6000	/* struct sockaddr */
    411 
    412 #define IW_PRIV_SIZE_FIXED	0x0800	/* Variable or fixed number of args */
    413 
    414 #define IW_PRIV_SIZE_MASK	0x07FF	/* Max number of those args */
    415 
    416 /*
    417  * Note : if the number of args is fixed and the size < 16 octets,
    418  * instead of passing a pointer we will put args in the iwreq struct...
    419  */
    420 
    421 /* ----------------------- OTHER CONSTANTS ----------------------- */
    422 
    423 /* Maximum frequencies in the range struct */
    424 #define IW_MAX_FREQUENCIES	32
    425 /* Note : if you have something like 80 frequencies,
    426  * don't increase this constant and don't fill the frequency list.
    427  * The user will be able to set by channel anyway... */
    428 
    429 /* Maximum bit rates in the range struct */
    430 #define IW_MAX_BITRATES		32
    431 
    432 /* Maximum tx powers in the range struct */
    433 #define IW_MAX_TXPOWER		8
    434 /* Note : if you more than 8 TXPowers, just set the max and min or
    435  * a few of them in the struct iw_range. */
    436 
    437 /* Maximum of address that you may set with SPY */
    438 #define IW_MAX_SPY		8
    439 
    440 /* Maximum of address that you may get in the
    441    list of access points in range */
    442 #define IW_MAX_AP		64
    443 
    444 /* Maximum size of the ESSID and NICKN strings */
    445 #define IW_ESSID_MAX_SIZE	32
    446 
    447 /* Modes of operation */
    448 #define IW_MODE_AUTO	0	/* Let the driver decides */
    449 #define IW_MODE_ADHOC	1	/* Single cell network */
    450 #define IW_MODE_INFRA	2	/* Multi cell network, roaming, ... */
    451 #define IW_MODE_MASTER	3	/* Synchronisation master or Access Point */
    452 #define IW_MODE_REPEAT	4	/* Wireless Repeater (forwarder) */
    453 #define IW_MODE_SECOND	5	/* Secondary master/repeater (backup) */
    454 #define IW_MODE_MONITOR	6	/* Passive monitor (listen only) */
    455 #define IW_MODE_MESH	7	/* Mesh (IEEE 802.11s) network */
    456 
    457 /* Statistics flags (bitmask in updated) */
    458 #define IW_QUAL_QUAL_UPDATED	0x01	/* Value was updated since last read */
    459 #define IW_QUAL_LEVEL_UPDATED	0x02
    460 #define IW_QUAL_NOISE_UPDATED	0x04
    461 #define IW_QUAL_ALL_UPDATED	0x07
    462 #define IW_QUAL_DBM		0x08	/* Level + Noise are dBm */
    463 #define IW_QUAL_QUAL_INVALID	0x10	/* Driver doesn't provide value */
    464 #define IW_QUAL_LEVEL_INVALID	0x20
    465 #define IW_QUAL_NOISE_INVALID	0x40
    466 #define IW_QUAL_RCPI		0x80	/* Level + Noise are 802.11k RCPI */
    467 #define IW_QUAL_ALL_INVALID	0x70
    468 
    469 /* Frequency flags */
    470 #define IW_FREQ_AUTO		0x00	/* Let the driver decides */
    471 #define IW_FREQ_FIXED		0x01	/* Force a specific value */
    472 
    473 /* Maximum number of size of encoding token available
    474  * they are listed in the range structure */
    475 #define IW_MAX_ENCODING_SIZES	8
    476 
    477 /* Maximum size of the encoding token in bytes */
    478 #define IW_ENCODING_TOKEN_MAX	64	/* 512 bits (for now) */
    479 
    480 /* Flags for encoding (along with the token) */
    481 #define IW_ENCODE_INDEX		0x00FF	/* Token index (if needed) */
    482 #define IW_ENCODE_FLAGS		0xFF00	/* Flags defined below */
    483 #define IW_ENCODE_MODE		0xF000	/* Modes defined below */
    484 #define IW_ENCODE_DISABLED	0x8000	/* Encoding disabled */
    485 #define IW_ENCODE_ENABLED	0x0000	/* Encoding enabled */
    486 #define IW_ENCODE_RESTRICTED	0x4000	/* Refuse non-encoded packets */
    487 #define IW_ENCODE_OPEN		0x2000	/* Accept non-encoded packets */
    488 #define IW_ENCODE_NOKEY		0x0800  /* Key is write only, so not present */
    489 #define IW_ENCODE_TEMP		0x0400  /* Temporary key */
    490 
    491 /* Power management flags available (along with the value, if any) */
    492 #define IW_POWER_ON		0x0000	/* No details... */
    493 #define IW_POWER_TYPE		0xF000	/* Type of parameter */
    494 #define IW_POWER_PERIOD		0x1000	/* Value is a period/duration of  */
    495 #define IW_POWER_TIMEOUT	0x2000	/* Value is a timeout (to go asleep) */
    496 #define IW_POWER_MODE		0x0F00	/* Power Management mode */
    497 #define IW_POWER_UNICAST_R	0x0100	/* Receive only unicast messages */
    498 #define IW_POWER_MULTICAST_R	0x0200	/* Receive only multicast messages */
    499 #define IW_POWER_ALL_R		0x0300	/* Receive all messages though PM */
    500 #define IW_POWER_FORCE_S	0x0400	/* Force PM procedure for sending unicast */
    501 #define IW_POWER_REPEATER	0x0800	/* Repeat broadcast messages in PM period */
    502 #define IW_POWER_MODIFIER	0x000F	/* Modify a parameter */
    503 #define IW_POWER_MIN		0x0001	/* Value is a minimum  */
    504 #define IW_POWER_MAX		0x0002	/* Value is a maximum */
    505 #define IW_POWER_RELATIVE	0x0004	/* Value is not in seconds/ms/us */
    506 
    507 /* Transmit Power flags available */
    508 #define IW_TXPOW_TYPE		0x00FF	/* Type of value */
    509 #define IW_TXPOW_DBM		0x0000	/* Value is in dBm */
    510 #define IW_TXPOW_MWATT		0x0001	/* Value is in mW */
    511 #define IW_TXPOW_RELATIVE	0x0002	/* Value is in arbitrary units */
    512 #define IW_TXPOW_RANGE		0x1000	/* Range of value between min/max */
    513 
    514 /* Retry limits and lifetime flags available */
    515 #define IW_RETRY_ON		0x0000	/* No details... */
    516 #define IW_RETRY_TYPE		0xF000	/* Type of parameter */
    517 #define IW_RETRY_LIMIT		0x1000	/* Maximum number of retries*/
    518 #define IW_RETRY_LIFETIME	0x2000	/* Maximum duration of retries in us */
    519 #define IW_RETRY_MODIFIER	0x00FF	/* Modify a parameter */
    520 #define IW_RETRY_MIN		0x0001	/* Value is a minimum  */
    521 #define IW_RETRY_MAX		0x0002	/* Value is a maximum */
    522 #define IW_RETRY_RELATIVE	0x0004	/* Value is not in seconds/ms/us */
    523 #define IW_RETRY_SHORT		0x0010	/* Value is for short packets  */
    524 #define IW_RETRY_LONG		0x0020	/* Value is for long packets */
    525 
    526 /* Scanning request flags */
    527 #define IW_SCAN_DEFAULT		0x0000	/* Default scan of the driver */
    528 #define IW_SCAN_ALL_ESSID	0x0001	/* Scan all ESSIDs */
    529 #define IW_SCAN_THIS_ESSID	0x0002	/* Scan only this ESSID */
    530 #define IW_SCAN_ALL_FREQ	0x0004	/* Scan all Frequencies */
    531 #define IW_SCAN_THIS_FREQ	0x0008	/* Scan only this Frequency */
    532 #define IW_SCAN_ALL_MODE	0x0010	/* Scan all Modes */
    533 #define IW_SCAN_THIS_MODE	0x0020	/* Scan only this Mode */
    534 #define IW_SCAN_ALL_RATE	0x0040	/* Scan all Bit-Rates */
    535 #define IW_SCAN_THIS_RATE	0x0080	/* Scan only this Bit-Rate */
    536 /* struct iw_scan_req scan_type */
    537 #define IW_SCAN_TYPE_ACTIVE 0
    538 #define IW_SCAN_TYPE_PASSIVE 1
    539 /* Maximum size of returned data */
    540 #define IW_SCAN_MAX_DATA	4096	/* In bytes */
    541 
    542 /* Scan capability flags - in (struct iw_range *)->scan_capa */
    543 #define IW_SCAN_CAPA_NONE		0x00
    544 #define IW_SCAN_CAPA_ESSID		0x01
    545 #define IW_SCAN_CAPA_BSSID		0x02
    546 #define IW_SCAN_CAPA_CHANNEL	0x04
    547 #define IW_SCAN_CAPA_MODE		0x08
    548 #define IW_SCAN_CAPA_RATE		0x10
    549 #define IW_SCAN_CAPA_TYPE		0x20
    550 #define IW_SCAN_CAPA_TIME		0x40
    551 
    552 /* Max number of char in custom event - use multiple of them if needed */
    553 #define IW_CUSTOM_MAX		256	/* In bytes */
    554 
    555 /* Generic information element */
    556 #define IW_GENERIC_IE_MAX	1024
    557 
    558 /* MLME requests (SIOCSIWMLME / struct iw_mlme) */
    559 #define IW_MLME_DEAUTH		0
    560 #define IW_MLME_DISASSOC	1
    561 #define IW_MLME_AUTH		2
    562 #define IW_MLME_ASSOC		3
    563 
    564 /* SIOCSIWAUTH/SIOCGIWAUTH struct iw_param flags */
    565 #define IW_AUTH_INDEX		0x0FFF
    566 #define IW_AUTH_FLAGS		0xF000
    567 /* SIOCSIWAUTH/SIOCGIWAUTH parameters (0 .. 4095)
    568  * (IW_AUTH_INDEX mask in struct iw_param flags; this is the index of the
    569  * parameter that is being set/get to; value will be read/written to
    570  * struct iw_param value field) */
    571 #define IW_AUTH_WPA_VERSION		0
    572 #define IW_AUTH_CIPHER_PAIRWISE		1
    573 #define IW_AUTH_CIPHER_GROUP		2
    574 #define IW_AUTH_KEY_MGMT		3
    575 #define IW_AUTH_TKIP_COUNTERMEASURES	4
    576 #define IW_AUTH_DROP_UNENCRYPTED	5
    577 #define IW_AUTH_80211_AUTH_ALG		6
    578 #define IW_AUTH_WPA_ENABLED		7
    579 #define IW_AUTH_RX_UNENCRYPTED_EAPOL	8
    580 #define IW_AUTH_ROAMING_CONTROL		9
    581 #define IW_AUTH_PRIVACY_INVOKED		10
    582 #define IW_AUTH_CIPHER_GROUP_MGMT	11
    583 #define IW_AUTH_MFP			12
    584 
    585 /* IW_AUTH_WPA_VERSION values (bit field) */
    586 #define IW_AUTH_WPA_VERSION_DISABLED	0x00000001
    587 #define IW_AUTH_WPA_VERSION_WPA		0x00000002
    588 #define IW_AUTH_WPA_VERSION_WPA2	0x00000004
    589 
    590 /* IW_AUTH_PAIRWISE_CIPHER, IW_AUTH_GROUP_CIPHER, and IW_AUTH_CIPHER_GROUP_MGMT
    591  * values (bit field) */
    592 #define IW_AUTH_CIPHER_NONE	0x00000001
    593 #define IW_AUTH_CIPHER_WEP40	0x00000002
    594 #define IW_AUTH_CIPHER_TKIP	0x00000004
    595 #define IW_AUTH_CIPHER_CCMP	0x00000008
    596 #define IW_AUTH_CIPHER_WEP104	0x00000010
    597 #define IW_AUTH_CIPHER_AES_CMAC	0x00000020
    598 
    599 /* IW_AUTH_KEY_MGMT values (bit field) */
    600 #define IW_AUTH_KEY_MGMT_802_1X	1
    601 #define IW_AUTH_KEY_MGMT_PSK	2
    602 
    603 /* IW_AUTH_80211_AUTH_ALG values (bit field) */
    604 #define IW_AUTH_ALG_OPEN_SYSTEM	0x00000001
    605 #define IW_AUTH_ALG_SHARED_KEY	0x00000002
    606 #define IW_AUTH_ALG_LEAP	0x00000004
    607 
    608 /* IW_AUTH_ROAMING_CONTROL values */
    609 #define IW_AUTH_ROAMING_ENABLE	0	/* driver/firmware based roaming */
    610 #define IW_AUTH_ROAMING_DISABLE	1	/* user space program used for roaming
    611 					 * control */
    612 
    613 /* IW_AUTH_MFP (management frame protection) values */
    614 #define IW_AUTH_MFP_DISABLED	0	/* MFP disabled */
    615 #define IW_AUTH_MFP_OPTIONAL	1	/* MFP optional */
    616 #define IW_AUTH_MFP_REQUIRED	2	/* MFP required */
    617 
    618 /* SIOCSIWENCODEEXT definitions */
    619 #define IW_ENCODE_SEQ_MAX_SIZE	8
    620 /* struct iw_encode_ext ->alg */
    621 #define IW_ENCODE_ALG_NONE	0
    622 #define IW_ENCODE_ALG_WEP	1
    623 #define IW_ENCODE_ALG_TKIP	2
    624 #define IW_ENCODE_ALG_CCMP	3
    625 #define IW_ENCODE_ALG_PMK	4
    626 #define IW_ENCODE_ALG_AES_CMAC	5
    627 /* struct iw_encode_ext ->ext_flags */
    628 #define IW_ENCODE_EXT_TX_SEQ_VALID	0x00000001
    629 #define IW_ENCODE_EXT_RX_SEQ_VALID	0x00000002
    630 #define IW_ENCODE_EXT_GROUP_KEY		0x00000004
    631 #define IW_ENCODE_EXT_SET_TX_KEY	0x00000008
    632 
    633 /* IWEVMICHAELMICFAILURE : struct iw_michaelmicfailure ->flags */
    634 #define IW_MICFAILURE_KEY_ID	0x00000003 /* Key ID 0..3 */
    635 #define IW_MICFAILURE_GROUP	0x00000004
    636 #define IW_MICFAILURE_PAIRWISE	0x00000008
    637 #define IW_MICFAILURE_STAKEY	0x00000010
    638 #define IW_MICFAILURE_COUNT	0x00000060 /* 1 or 2 (0 = count not supported)
    639 					    */
    640 
    641 /* Bit field values for enc_capa in struct iw_range */
    642 #define IW_ENC_CAPA_WPA		0x00000001
    643 #define IW_ENC_CAPA_WPA2	0x00000002
    644 #define IW_ENC_CAPA_CIPHER_TKIP	0x00000004
    645 #define IW_ENC_CAPA_CIPHER_CCMP	0x00000008
    646 #define IW_ENC_CAPA_4WAY_HANDSHAKE	0x00000010
    647 
    648 /* Event capability macros - in (struct iw_range *)->event_capa
    649  * Because we have more than 32 possible events, we use an array of
    650  * 32 bit bitmasks. Note : 32 bits = 0x20 = 2^5. */
    651 #define IW_EVENT_CAPA_BASE(cmd)		((cmd >= SIOCIWFIRSTPRIV) ? \
    652 					 (cmd - SIOCIWFIRSTPRIV + 0x60) : \
    653 					 (cmd - SIOCIWFIRST))
    654 #define IW_EVENT_CAPA_INDEX(cmd)	(IW_EVENT_CAPA_BASE(cmd) >> 5)
    655 #define IW_EVENT_CAPA_MASK(cmd)		(1 << (IW_EVENT_CAPA_BASE(cmd) & 0x1F))
    656 /* Event capability constants - event autogenerated by the kernel
    657  * This list is valid for most 802.11 devices, customise as needed... */
    658 #define IW_EVENT_CAPA_K_0	(IW_EVENT_CAPA_MASK(0x8B04) | \
    659 				 IW_EVENT_CAPA_MASK(0x8B06) | \
    660 				 IW_EVENT_CAPA_MASK(0x8B1A))
    661 #define IW_EVENT_CAPA_K_1	(IW_EVENT_CAPA_MASK(0x8B2A))
    662 /* "Easy" macro to set events in iw_range (less efficient) */
    663 #define IW_EVENT_CAPA_SET(event_capa, cmd) (event_capa[IW_EVENT_CAPA_INDEX(cmd)] |= IW_EVENT_CAPA_MASK(cmd))
    664 #define IW_EVENT_CAPA_SET_KERNEL(event_capa) {event_capa[0] |= IW_EVENT_CAPA_K_0; event_capa[1] |= IW_EVENT_CAPA_K_1; }
    665 
    666 
    667 /****************************** TYPES ******************************/
    668 
    669 /* --------------------------- SUBTYPES --------------------------- */
    670 /*
    671  *	Generic format for most parameters that fit in an int
    672  */
    673 struct	iw_param
    674 {
    675   __s32		value;		/* The value of the parameter itself */
    676   __u8		fixed;		/* Hardware should not use auto select */
    677   __u8		disabled;	/* Disable the feature */
    678   __u16		flags;		/* Various specifc flags (if any) */
    679 };
    680 
    681 /*
    682  *	For all data larger than 16 octets, we need to use a
    683  *	pointer to memory allocated in user space.
    684  */
    685 struct	iw_point
    686 {
    687   void __user	*pointer;	/* Pointer to the data  (in user space) */
    688   __u16		length;		/* number of fields or size in bytes */
    689   __u16		flags;		/* Optional params */
    690 };
    691 
    692 
    693 /*
    694  *	A frequency
    695  *	For numbers lower than 10^9, we encode the number in 'm' and
    696  *	set 'e' to 0
    697  *	For number greater than 10^9, we divide it by the lowest power
    698  *	of 10 to get 'm' lower than 10^9, with 'm'= f / (10^'e')...
    699  *	The power of 10 is in 'e', the result of the division is in 'm'.
    700  */
    701 struct	iw_freq
    702 {
    703 	__s32		m;		/* Mantissa */
    704 	__s16		e;		/* Exponent */
    705 	__u8		i;		/* List index (when in range struct) */
    706 	__u8		flags;		/* Flags (fixed/auto) */
    707 };
    708 
    709 /*
    710  *	Quality of the link
    711  */
    712 struct	iw_quality
    713 {
    714 	__u8		qual;		/* link quality (%retries, SNR,
    715 					   %missed beacons or better...) */
    716 	__u8		level;		/* signal level (dBm) */
    717 	__u8		noise;		/* noise level (dBm) */
    718 	__u8		updated;	/* Flags to know if updated */
    719 };
    720 
    721 /*
    722  *	Packet discarded in the wireless adapter due to
    723  *	"wireless" specific problems...
    724  *	Note : the list of counter and statistics in net_device_stats
    725  *	is already pretty exhaustive, and you should use that first.
    726  *	This is only additional stats...
    727  */
    728 struct	iw_discarded
    729 {
    730 	__u32		nwid;		/* Rx : Wrong nwid/essid */
    731 	__u32		code;		/* Rx : Unable to code/decode (WEP) */
    732 	__u32		fragment;	/* Rx : Can't perform MAC reassembly */
    733 	__u32		retries;	/* Tx : Max MAC retries num reached */
    734 	__u32		misc;		/* Others cases */
    735 };
    736 
    737 /*
    738  *	Packet/Time period missed in the wireless adapter due to
    739  *	"wireless" specific problems...
    740  */
    741 struct	iw_missed
    742 {
    743 	__u32		beacon;		/* Missed beacons/superframe */
    744 };
    745 
    746 /*
    747  *	Quality range (for spy threshold)
    748  */
    749 struct	iw_thrspy
    750 {
    751 	struct sockaddr		addr;		/* Source address (hw/mac) */
    752 	struct iw_quality	qual;		/* Quality of the link */
    753 	struct iw_quality	low;		/* Low threshold */
    754 	struct iw_quality	high;		/* High threshold */
    755 };
    756 
    757 /*
    758  *	Optional data for scan request
    759  *
    760  *	Note: these optional parameters are controlling parameters for the
    761  *	scanning behavior, these do not apply to getting scan results
    762  *	(SIOCGIWSCAN). Drivers are expected to keep a local BSS table and
    763  *	provide a merged results with all BSSes even if the previous scan
    764  *	request limited scanning to a subset, e.g., by specifying an SSID.
    765  *	Especially, scan results are required to include an entry for the
    766  *	current BSS if the driver is in Managed mode and associated with an AP.
    767  */
    768 struct	iw_scan_req
    769 {
    770 	__u8		scan_type; /* IW_SCAN_TYPE_{ACTIVE,PASSIVE} */
    771 	__u8		essid_len;
    772 	__u8		num_channels; /* num entries in channel_list;
    773 				       * 0 = scan all allowed channels */
    774 	__u8		flags; /* reserved as padding; use zero, this may
    775 				* be used in the future for adding flags
    776 				* to request different scan behavior */
    777 	struct sockaddr	bssid; /* ff:ff:ff:ff:ff:ff for broadcast BSSID or
    778 				* individual address of a specific BSS */
    779 
    780 	/*
    781 	 * Use this ESSID if IW_SCAN_THIS_ESSID flag is used instead of using
    782 	 * the current ESSID. This allows scan requests for specific ESSID
    783 	 * without having to change the current ESSID and potentially breaking
    784 	 * the current association.
    785 	 */
    786 	__u8		essid[IW_ESSID_MAX_SIZE];
    787 
    788 	/*
    789 	 * Optional parameters for changing the default scanning behavior.
    790 	 * These are based on the MLME-SCAN.request from IEEE Std 802.11.
    791 	 * TU is 1.024 ms. If these are set to 0, driver is expected to use
    792 	 * reasonable default values. min_channel_time defines the time that
    793 	 * will be used to wait for the first reply on each channel. If no
    794 	 * replies are received, next channel will be scanned after this. If
    795 	 * replies are received, total time waited on the channel is defined by
    796 	 * max_channel_time.
    797 	 */
    798 	__u32		min_channel_time; /* in TU */
    799 	__u32		max_channel_time; /* in TU */
    800 
    801 	struct iw_freq	channel_list[IW_MAX_FREQUENCIES];
    802 };
    803 
    804 /* ------------------------- WPA SUPPORT ------------------------- */
    805 
    806 /*
    807  *	Extended data structure for get/set encoding (this is used with
    808  *	SIOCSIWENCODEEXT/SIOCGIWENCODEEXT. struct iw_point and IW_ENCODE_*
    809  *	flags are used in the same way as with SIOCSIWENCODE/SIOCGIWENCODE and
    810  *	only the data contents changes (key data -> this structure, including
    811  *	key data).
    812  *
    813  *	If the new key is the first group key, it will be set as the default
    814  *	TX key. Otherwise, default TX key index is only changed if
    815  *	IW_ENCODE_EXT_SET_TX_KEY flag is set.
    816  *
    817  *	Key will be changed with SIOCSIWENCODEEXT in all cases except for
    818  *	special "change TX key index" operation which is indicated by setting
    819  *	key_len = 0 and ext_flags |= IW_ENCODE_EXT_SET_TX_KEY.
    820  *
    821  *	tx_seq/rx_seq are only used when respective
    822  *	IW_ENCODE_EXT_{TX,RX}_SEQ_VALID flag is set in ext_flags. Normal
    823  *	TKIP/CCMP operation is to set RX seq with SIOCSIWENCODEEXT and start
    824  *	TX seq from zero whenever key is changed. SIOCGIWENCODEEXT is normally
    825  *	used only by an Authenticator (AP or an IBSS station) to get the
    826  *	current TX sequence number. Using TX_SEQ_VALID for SIOCSIWENCODEEXT and
    827  *	RX_SEQ_VALID for SIOCGIWENCODEEXT are optional, but can be useful for
    828  *	debugging/testing.
    829  */
    830 struct	iw_encode_ext
    831 {
    832 	__u32		ext_flags; /* IW_ENCODE_EXT_* */
    833 	__u8		tx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
    834 	__u8		rx_seq[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
    835 	struct sockaddr	addr; /* ff:ff:ff:ff:ff:ff for broadcast/multicast
    836 			       * (group) keys or unicast address for
    837 			       * individual keys */
    838 	__u16		alg; /* IW_ENCODE_ALG_* */
    839 	__u16		key_len;
    840 	__u8		key[0];
    841 };
    842 
    843 /* SIOCSIWMLME data */
    844 struct	iw_mlme
    845 {
    846 	__u16		cmd; /* IW_MLME_* */
    847 	__u16		reason_code;
    848 	struct sockaddr	addr;
    849 };
    850 
    851 /* SIOCSIWPMKSA data */
    852 #define IW_PMKSA_ADD		1
    853 #define IW_PMKSA_REMOVE		2
    854 #define IW_PMKSA_FLUSH		3
    855 
    856 #define IW_PMKID_LEN	16
    857 
    858 struct	iw_pmksa
    859 {
    860 	__u32		cmd; /* IW_PMKSA_* */
    861 	struct sockaddr	bssid;
    862 	__u8		pmkid[IW_PMKID_LEN];
    863 };
    864 
    865 /* IWEVMICHAELMICFAILURE data */
    866 struct	iw_michaelmicfailure
    867 {
    868 	__u32		flags;
    869 	struct sockaddr	src_addr;
    870 	__u8		tsc[IW_ENCODE_SEQ_MAX_SIZE]; /* LSB first */
    871 };
    872 
    873 /* IWEVPMKIDCAND data */
    874 #define IW_PMKID_CAND_PREAUTH	0x00000001 /* RNS pre-authentication enabled */
    875 struct	iw_pmkid_cand
    876 {
    877 	__u32		flags; /* IW_PMKID_CAND_* */
    878 	__u32		index; /* the smaller the index, the higher the
    879 				* priority */
    880 	struct sockaddr	bssid;
    881 };
    882 
    883 /* ------------------------ WIRELESS STATS ------------------------ */
    884 /*
    885  * Wireless statistics (used for /proc/net/wireless)
    886  */
    887 struct	iw_statistics
    888 {
    889 	__u16		status;		/* Status
    890 					 * - device dependent for now */
    891 
    892 	struct iw_quality	qual;		/* Quality of the link
    893 						 * (instant/mean/max) */
    894 	struct iw_discarded	discard;	/* Packet discarded counts */
    895 	struct iw_missed	miss;		/* Packet missed counts */
    896 };
    897 
    898 /* ------------------------ IOCTL REQUEST ------------------------ */
    899 /*
    900  * This structure defines the payload of an ioctl, and is used
    901  * below.
    902  *
    903  * Note that this structure should fit on the memory footprint
    904  * of iwreq (which is the same as ifreq), which mean a max size of
    905  * 16 octets = 128 bits. Warning, pointers might be 64 bits wide...
    906  * You should check this when increasing the structures defined
    907  * above in this file...
    908  */
    909 union	iwreq_data
    910 {
    911 	/* Config - generic */
    912 	char		name[IFNAMSIZ];
    913 	/* Name : used to verify the presence of  wireless extensions.
    914 	 * Name of the protocol/provider... */
    915 
    916 	struct iw_point	essid;		/* Extended network name */
    917 	struct iw_param	nwid;		/* network id (or domain - the cell) */
    918 	struct iw_freq	freq;		/* frequency or channel :
    919 					 * 0-1000 = channel
    920 					 * > 1000 = frequency in Hz */
    921 
    922 	struct iw_param	sens;		/* signal level threshold */
    923 	struct iw_param	bitrate;	/* default bit rate */
    924 	struct iw_param	txpower;	/* default transmit power */
    925 	struct iw_param	rts;		/* RTS threshold threshold */
    926 	struct iw_param	frag;		/* Fragmentation threshold */
    927 	__u32		mode;		/* Operation mode */
    928 	struct iw_param	retry;		/* Retry limits & lifetime */
    929 
    930 	struct iw_point	encoding;	/* Encoding stuff : tokens */
    931 	struct iw_param	power;		/* PM duration/timeout */
    932 	struct iw_quality qual;		/* Quality part of statistics */
    933 
    934 	struct sockaddr	ap_addr;	/* Access point address */
    935 	struct sockaddr	addr;		/* Destination address (hw/mac) */
    936 
    937 	struct iw_param	param;		/* Other small parameters */
    938 	struct iw_point	data;		/* Other large parameters */
    939 };
    940 
    941 /*
    942  * The structure to exchange data for ioctl.
    943  * This structure is the same as 'struct ifreq', but (re)defined for
    944  * convenience...
    945  * Do I need to remind you about structure size (32 octets) ?
    946  */
    947 struct	iwreq
    948 {
    949 	union
    950 	{
    951 		char	ifrn_name[IFNAMSIZ];	/* if name, e.g. "eth0" */
    952 	} ifr_ifrn;
    953 
    954 	/* Data part (defined just above) */
    955 	union	iwreq_data	u;
    956 };
    957 
    958 /* -------------------------- IOCTL DATA -------------------------- */
    959 /*
    960  *	For those ioctl which want to exchange mode data that what could
    961  *	fit in the above structure...
    962  */
    963 
    964 /*
    965  *	Range of parameters
    966  */
    967 
    968 struct	iw_range
    969 {
    970 	/* Informative stuff (to choose between different interface) */
    971 	__u32		throughput;	/* To give an idea... */
    972 	/* In theory this value should be the maximum benchmarked
    973 	 * TCP/IP throughput, because with most of these devices the
    974 	 * bit rate is meaningless (overhead an co) to estimate how
    975 	 * fast the connection will go and pick the fastest one.
    976 	 * I suggest people to play with Netperf or any benchmark...
    977 	 */
    978 
    979 	/* NWID (or domain id) */
    980 	__u32		min_nwid;	/* Minimal NWID we are able to set */
    981 	__u32		max_nwid;	/* Maximal NWID we are able to set */
    982 
    983 	/* Old Frequency (backward compat - moved lower ) */
    984 	__u16		old_num_channels;
    985 	__u8		old_num_frequency;
    986 
    987 	/* Scan capabilities */
    988 	__u8		scan_capa; 	/* IW_SCAN_CAPA_* bit field */
    989 
    990 	/* Wireless event capability bitmasks */
    991 	__u32		event_capa[6];
    992 
    993 	/* signal level threshold range */
    994 	__s32		sensitivity;
    995 
    996 	/* Quality of link & SNR stuff */
    997 	/* Quality range (link, level, noise)
    998 	 * If the quality is absolute, it will be in the range [0 ; max_qual],
    999 	 * if the quality is dBm, it will be in the range [max_qual ; 0].
   1000 	 * Don't forget that we use 8 bit arithmetics... */
   1001 	struct iw_quality	max_qual;	/* Quality of the link */
   1002 	/* This should contain the average/typical values of the quality
   1003 	 * indicator. This should be the threshold between a "good" and
   1004 	 * a "bad" link (example : monitor going from green to orange).
   1005 	 * Currently, user space apps like quality monitors don't have any
   1006 	 * way to calibrate the measurement. With this, they can split
   1007 	 * the range between 0 and max_qual in different quality level
   1008 	 * (using a geometric subdivision centered on the average).
   1009 	 * I expect that people doing the user space apps will feedback
   1010 	 * us on which value we need to put in each driver... */
   1011 	struct iw_quality	avg_qual;	/* Quality of the link */
   1012 
   1013 	/* Rates */
   1014 	__u8		num_bitrates;	/* Number of entries in the list */
   1015 	__s32		bitrate[IW_MAX_BITRATES];	/* list, in bps */
   1016 
   1017 	/* RTS threshold */
   1018 	__s32		min_rts;	/* Minimal RTS threshold */
   1019 	__s32		max_rts;	/* Maximal RTS threshold */
   1020 
   1021 	/* Frag threshold */
   1022 	__s32		min_frag;	/* Minimal frag threshold */
   1023 	__s32		max_frag;	/* Maximal frag threshold */
   1024 
   1025 	/* Power Management duration & timeout */
   1026 	__s32		min_pmp;	/* Minimal PM period */
   1027 	__s32		max_pmp;	/* Maximal PM period */
   1028 	__s32		min_pmt;	/* Minimal PM timeout */
   1029 	__s32		max_pmt;	/* Maximal PM timeout */
   1030 	__u16		pmp_flags;	/* How to decode max/min PM period */
   1031 	__u16		pmt_flags;	/* How to decode max/min PM timeout */
   1032 	__u16		pm_capa;	/* What PM options are supported */
   1033 
   1034 	/* Encoder stuff */
   1035 	__u16	encoding_size[IW_MAX_ENCODING_SIZES];	/* Different token sizes */
   1036 	__u8	num_encoding_sizes;	/* Number of entry in the list */
   1037 	__u8	max_encoding_tokens;	/* Max number of tokens */
   1038 	/* For drivers that need a "login/passwd" form */
   1039 	__u8	encoding_login_index;	/* token index for login token */
   1040 
   1041 	/* Transmit power */
   1042 	__u16		txpower_capa;	/* What options are supported */
   1043 	__u8		num_txpower;	/* Number of entries in the list */
   1044 	__s32		txpower[IW_MAX_TXPOWER];	/* list, in bps */
   1045 
   1046 	/* Wireless Extension version info */
   1047 	__u8		we_version_compiled;	/* Must be WIRELESS_EXT */
   1048 	__u8		we_version_source;	/* Last update of source */
   1049 
   1050 	/* Retry limits and lifetime */
   1051 	__u16		retry_capa;	/* What retry options are supported */
   1052 	__u16		retry_flags;	/* How to decode max/min retry limit */
   1053 	__u16		r_time_flags;	/* How to decode max/min retry life */
   1054 	__s32		min_retry;	/* Minimal number of retries */
   1055 	__s32		max_retry;	/* Maximal number of retries */
   1056 	__s32		min_r_time;	/* Minimal retry lifetime */
   1057 	__s32		max_r_time;	/* Maximal retry lifetime */
   1058 
   1059 	/* Frequency */
   1060 	__u16		num_channels;	/* Number of channels [0; num - 1] */
   1061 	__u8		num_frequency;	/* Number of entry in the list */
   1062 	struct iw_freq	freq[IW_MAX_FREQUENCIES];	/* list */
   1063 	/* Note : this frequency list doesn't need to fit channel numbers,
   1064 	 * because each entry contain its channel index */
   1065 
   1066 	__u32		enc_capa;	/* IW_ENC_CAPA_* bit field */
   1067 };
   1068 
   1069 /*
   1070  * Private ioctl interface information
   1071  */
   1072 
   1073 struct	iw_priv_args
   1074 {
   1075 	__u32		cmd;		/* Number of the ioctl to issue */
   1076 	__u16		set_args;	/* Type and number of args */
   1077 	__u16		get_args;	/* Type and number of args */
   1078 	char		name[IFNAMSIZ];	/* Name of the extension */
   1079 };
   1080 
   1081 /* ----------------------- WIRELESS EVENTS ----------------------- */
   1082 /*
   1083  * Wireless events are carried through the rtnetlink socket to user
   1084  * space. They are encapsulated in the IFLA_WIRELESS field of
   1085  * a RTM_NEWLINK message.
   1086  */
   1087 
   1088 /*
   1089  * A Wireless Event. Contains basically the same data as the ioctl...
   1090  */
   1091 struct iw_event
   1092 {
   1093 	__u16		len;			/* Real length of this stuff */
   1094 	__u16		cmd;			/* Wireless IOCTL */
   1095 	union iwreq_data	u;		/* IOCTL fixed payload */
   1096 };
   1097 
   1098 /* Size of the Event prefix (including padding and alignement junk) */
   1099 #define IW_EV_LCP_LEN	(sizeof(struct iw_event) - sizeof(union iwreq_data))
   1100 /* Size of the various events */
   1101 #define IW_EV_CHAR_LEN	(IW_EV_LCP_LEN + IFNAMSIZ)
   1102 #define IW_EV_UINT_LEN	(IW_EV_LCP_LEN + sizeof(__u32))
   1103 #define IW_EV_FREQ_LEN	(IW_EV_LCP_LEN + sizeof(struct iw_freq))
   1104 #define IW_EV_PARAM_LEN	(IW_EV_LCP_LEN + sizeof(struct iw_param))
   1105 #define IW_EV_ADDR_LEN	(IW_EV_LCP_LEN + sizeof(struct sockaddr))
   1106 #define IW_EV_QUAL_LEN	(IW_EV_LCP_LEN + sizeof(struct iw_quality))
   1107 
   1108 /* iw_point events are special. First, the payload (extra data) come at
   1109  * the end of the event, so they are bigger than IW_EV_POINT_LEN. Second,
   1110  * we omit the pointer, so start at an offset. */
   1111 #define IW_EV_POINT_OFF (((char *) &(((struct iw_point *) NULL)->length)) - \
   1112 			  (char *) NULL)
   1113 #define IW_EV_POINT_LEN	(IW_EV_LCP_LEN + sizeof(struct iw_point) - \
   1114 			 IW_EV_POINT_OFF)
   1115 
   1116 
   1117 /* Size of the Event prefix when packed in stream */
   1118 #define IW_EV_LCP_PK_LEN	(4)
   1119 /* Size of the various events when packed in stream */
   1120 #define IW_EV_CHAR_PK_LEN	(IW_EV_LCP_PK_LEN + IFNAMSIZ)
   1121 #define IW_EV_UINT_PK_LEN	(IW_EV_LCP_PK_LEN + sizeof(__u32))
   1122 #define IW_EV_FREQ_PK_LEN	(IW_EV_LCP_PK_LEN + sizeof(struct iw_freq))
   1123 #define IW_EV_PARAM_PK_LEN	(IW_EV_LCP_PK_LEN + sizeof(struct iw_param))
   1124 #define IW_EV_ADDR_PK_LEN	(IW_EV_LCP_PK_LEN + sizeof(struct sockaddr))
   1125 #define IW_EV_QUAL_PK_LEN	(IW_EV_LCP_PK_LEN + sizeof(struct iw_quality))
   1126 #define IW_EV_POINT_PK_LEN	(IW_EV_LCP_PK_LEN + 4)
   1127 
   1128 #endif /* _UAPI_LINUX_WIRELESS_H */
   1129